diff --git a/fisica/lancamento.py b/fisica/lancamento.py
index d395378..5debb4d 100644
--- a/fisica/lancamento.py
+++ b/fisica/lancamento.py
@@ -22,8 +22,10 @@ def main():
     turtle.shape('turtle')
     turtle.color('blue', 'red')
     turtle.up()
+    turtle.hideturtle()
     turtle.goto(-MEIA_LARG, -MEIA_ALT)
-    turtle.down()
+    turtle.showturtle()
+
 
     for t in range(81):
         x = sx(t)